没有疫苗能100%有效率。流感疫苗也一样，但是疫苗能降低得病概率、减轻症状！也就是说即使感染了也是轻症！

来源: TYTOU 于 2021-01-31 21:37:11 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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